Earthquakes are natural disasters, it statrs when two tectonic plates scrape together, the force or energy from the plates make the ground shake or move.
Where do earthquakes come from?
They come from two tectonic plates under the earth that scrape together, this forces the earth to move.
How do the plates move?
Plates at our plates surface move because fo the intense heat in the earth's core that causes molten rock in the mantle layer to move. It moves in a patteren called a convection cell that forms when warm material rises, cool, and eventually sinks down. As the cooled material sinks down it is warmed and rises again. Thats how the plates move.
How deep do cracks go under the earth?
The cracks can spread up to 6 400 km.
How long does an earthquake go for?
The earthquake goes for a few seconds.
How much damage can they do?
The earthquake can do a lot of damage to people and to buildings. People all around the world have died or lost someone in their family. Earthquakes can crack walls and make building fall over.
What causes the ground to move?
When the tectonic plates are scraping together energy or force comes out and that causes the ground to move.
Earthquake Week 7
What is the epicentre of an earthquake?
The epicentre is the location directly above where the plates move.
How do aftershocks occur?
Aftershocks occur after the earthquake(the mainshock). The aftershock can be any size depending on the size of the mainshock. Aftershocks can go for days, weeks, months and even years.
Explain how a seismograph works?
Scientists use a seismograph to measure an earthquake. The seismograph moves when the earth is shaking, there is a recording device that measures how far the rest of the seismograph has moved with the mass.
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Earthquakes Week 3
How do earthquakes start?
Earthquakes are natural disasters, it statrs when two tectonic plates scrape together, the force or energy from the plates make the ground shake or move.
Where do earthquakes come from?
They come from two tectonic plates under the earth that scrape together, this forces the earth to move.
How do the plates move?
Plates at our plates surface move because fo the intense heat in the earth's core that causes molten rock in the mantle layer to move. It moves in a patteren called a convection cell that forms when warm material rises, cool, and eventually sinks down. As the cooled material sinks down it is warmed and rises again. Thats how the plates move.How deep do cracks go under the earth?
The cracks can spread up to 6 400 km.
How long does an earthquake go for?
The earthquake goes for a few seconds.
How much damage can they do?
The earthquake can do a lot of damage to people and to buildings. People all around the world have died or lost someone in their family. Earthquakes can crack walls and make building fall over.
What causes the ground to move?
When the tectonic plates are scraping together energy or force comes out and that causes the ground to move.
Earthquake Week 7
What is the epicentre of an earthquake?
The epicentre is the location directly above where the plates move.
How do aftershocks occur?
Aftershocks occur after the earthquake(the mainshock). The aftershock can be any size depending on the size of the mainshock. Aftershocks can go for days, weeks, months and even years.
Explain how a seismograph works?
Scientists use a seismograph to measure an earthquake. The seismograph moves when the earth is shaking, there is a recording device that measures how far the rest of the seismograph has moved with the mass.